#include <unordered_map>
#include <string>


namespace S1 {
    class Solution {
        int percentageLetter(std::string s, char letter) {
            int count = 0;
            for (char c : s) {
                if (c == letter) {
                    count++;
                }
            }
            return (count * 100) / s.size();
        }
    };
}
